PMID: 2106762Jan 1, 1990Paper

Occurrence of middle ear pathogens in the nasopharynx of young individuals. A quantitative study in four age groups

Acta Oto-laryngologica
L E Stenfors, S Räisänen

Abstract

Colonization of middle ear pathogens (S. pneumoniae, H. influenzae and B. catarrhalis), potential pathogens (S. aureus and coagulase-negative staphylococci) and non-pathogens was determined quantitatively on the posterior wall of the nasopharynx (NPH) of children (four age groups: under 2 years, 2-5 years, 6-10 years and 11-15 years). None of the 90 individuals examined was suffering at the time of bacterial sampling from acute otitis media (AOM), sinusitis, or tonsillitis. All individuals under 2 years of age harboured middle ear pathogens in the NPH, but only 40% of the individuals of the oldest age group (p less than 0.001). Furthermore, in the youngest group, 57% of the cases had pathogens in the NPH, which completely dominated the bacterial flora, i.e. constituted more than 90% of the total bacterial count when calculated as CFU/cm2. The corresponding count in the oldest age group was only 20% (p less than 0.01). One important reason for the high incidence of AOM among young children in particular seems to be the noticeable accumulation of middle ear pathogens in huge quantities in the NPH in this age group.

References

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Citations

Aug 1, 1996·International Journal of Pediatric Otorhinolaryngology·I H BjerkliL E Stenfors
Sep 21, 2002·International Journal of Pediatric Otorhinolaryngology·Lars-Eric StenforsSimo Räisänen
Mar 1, 1997·Otolaryngology--head and Neck Surgery : Official Journal of American Academy of Otolaryngology-Head and Neck Surgery·J M BernsteinM E Wilson
Jul 1, 1991·The Journal of Laryngology and Otology·L E Stenfors, S Räisänen
Feb 1, 1992·The Journal of Laryngology and Otology·L E Stenfors, S Räisänen
Jan 1, 1992·Scandinavian Journal of Infectious Diseases·L E Stenfors, S Räisänen
May 20, 2009·Acta Oto-laryngologica·Anna GranathLars-Olaf Cardell
Jun 15, 2007·Infectious Disease Clinics of North America·Mark W Hull, Anthony W Chow
Jul 1, 1991·International Journal of Pediatric Otorhinolaryngology·L E Stenfors, S Räisänen
Jun 1, 1992·Clinical Otolaryngology and Allied Sciences·L E Stenfors, S Räisänen
Sep 1, 1990·Acta Oto-laryngologica·L E Stenfors, S Räisänen
Sep 1, 1991·Otolaryngology--head and Neck Surgery : Official Journal of American Academy of Otolaryngology-Head and Neck Surgery·J M BernsteinP L Ogra

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